dccb07c155579c24ccb505a00e566295022b29cb343bd58b9acb18a62f5c2806

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
01-06-2024 04:05

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General

Target

2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe
Size

43KB
MD5

fd133ca2be3d23cb0eafe64682007aa6
SHA1

39735a2064529a0ed19a8430418ef7510454c4cb
SHA256

dccb07c155579c24ccb505a00e566295022b29cb343bd58b9acb18a62f5c2806
SHA512

411d7497c35697cef036494c4fe4c6658ff736df532c26be25cb64914b05eaf7f20e93b8cd1457a3569385f3035d1516eef4aa68670528057901a1aeaf6f9ba6
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabM0t:6j+1NMOtEvwDpjrR2XabMq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013a88-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1748-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1748-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013a88-11.dat	CryptoLocker_set1
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1748-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1748-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000c000000013a88-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1748-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1748-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
1748	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1748	2220	2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe	28
PID 2220 wrote to memory of 1748	2220	2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe	28
PID 2220 wrote to memory of 1748	2220	2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe	28
PID 2220 wrote to memory of 1748	2220	2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_fd133ca2be3d23cb0eafe64682007aa6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
44KB

MD5
cda1fd6c6b13b69704dd73d54593607a

SHA1
70ae5fbabf10073b3f6f49260072a635e88e9cba

SHA256
b58db78812d43a81047d5397c820c5772866dbfcdbd724a05123e284f778887b

SHA512
3bc4178371ec53462b481b54914414751e70d8f0eee837473a54b739a41be5188bbe37a056c9ac0cf7d0a97d3e01c7889acbaf92ce8ba9863cc6f2dc20507bc4

Download Submit
memory/1748-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1748-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1748-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1748-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2220-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-3-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download